Message-ID: <299@inuxa.UUCP>
Date: Thu, 11-Oct-84 16:21:02 EDT
Article-I.D.: inuxa.299
Posted: Thu Oct 11 16:21:02 1984
Date-Received: Sat, 13-Oct-84 04:46:53 EDT
Organization: AT&T Consumer Products Div., Indianapolis
Lines: 57
The ATARI parallel bus pin-out.
This information is from the 600XL Field Service Manual.
-----------
GND | 1 2 | EXTERNAL SELECT
A0 | 3 4 | A1
A2 | 5 6 | A3
A4 | 7 8 | A5
A6 | 9 10 | GND
A7 | 11 12 | A8
A9 | 13 14 | A10
A11 | 15 16 | A12
A13 | 17 18 | A14
GND | 19 20 | A15
D0 | 21 22 | D1
D2 | 23 24 | D3
D4 | 25 26 | D5
D6 | 27 28 | D7
GND | 29 30 | GND
PHASE 2 CLOCK OUTPUT | 31 32 | GND
N/C | 33 34 | RESET OUTPUT
IRQ | 35 36 | READY INPUT
N/C | 37 38 | EXTERNAL DECODER OUTPUT
N/C | 39 40 | REFRESH OUTPUT
COLUMN ADDRESS OUTPUT | 41 42 | GND
MATH PACK DISABLE INPUT | 43 44 | ROW ADDRESS STROBE OUTPUT
GND | 45 46 | LATCHER READ/WRITE OUTPUT
N/C | 47 48 | N/C
AUDIO IN | 49 50 | GND
-----------
To locate pin 1,
while looking at the back of the unit, pin 1 is on the top right side.
This is the only information I have.
NO!! I don't know anymore about the use of the pins.
NO! I don't know if the pinout is the EXACT same on the 800XL.
This is the only page of the Field Service Manual I have. I recieved it
from Atari on special request.
Does anybody know any more about the bus??
I will post a summary of any replies I get.
Ted O. Burger